BIPARIA'. 



323 



Family HIRUNDINID^. 



When Brabourne and Chubb published their ' List of the Birds 

 of South America' in 1912, this family was represented by 

 seven genera and twenty-four species. Six of the genera and 

 eleven of the species are represented in British Guiana. 



Genus RIPARIA Foster. 



Eiparia Foster, Synop. Cat. Brit. B. p. 17, 18J 7. Type B. riparia 

 (Linn.). 



Fig. 128.— To show the" tail, which is almost square. 



In this genus the toes are unfeathered, a superior membrane to 

 the nostrils is present, there is no indentation on the inner web of 

 the outer tail-feathers, a distinct longitudinal membrane over- 

 hanging the pasal aperture is present, and the outer toe and claw 

 are superior to the hind toe and claw. Coloration : male and 

 female similar. 



554. Riparia riparia. 



BAifK- Swallow. 



Hirtmdo riparia Linn. Syst. Nat. i. p. 192, 1768 (Sweden). 



Qotile riparia Salvin, Ibis, 1885, p. 206 (Bartica Grove) ; Sharpg, Cat. 



B. Brit. Miis. x. pp. 96, 630, 1886 (Bartica Grove). 

 Biparia riparia Quelch, Timehri (2) x. p. 262, 1896 (migration) ; 



Brabom-ne & Chublj, B. S. Amer. i. p. 326, no. 3326, 1912. 



Sand Martin {Quelch). 



Adult male. General colour of the upper parts dark brown, 



y2 



